Captain Nemo's cellphone
In addition to several eclectic watches and odd multipurpose pens, Zagreb artist Ivan Mavrović has made several steampunk-inspired cell phones. It took him two weeks to convert a Nokia handset into what appears to be a 19th-century Star Trek communicator: the Ozone Battery.
After adding an exoskeleton of aluminum and steel, he edged the frame with a spring and put a fisheye lens over the screen. He covered the numeric keys with small hex bolts, just about guaranteeing that you'll accidentally call someone. All this hardware doubles the size and weight of the phone, but it makes quite a statement when you answer a call.